How do I install my attachment to my RYOBI Power Head? Stop the engine and disconnect the spark plug (if a gas unit), remove the battery (if using RYOBI 40V Power Head) Loosen the knob at the connection point. Push in the button and twist the shafts to remove and separate the Power Head from the Attachment. Click to see full answer. Keeping this in consideration, what brand fits Ryobi attachments?Other brands that use this system include: John Deere, Cub Cadet, Troy-Bilt, Poulan, Poulan Pro, Weed Eater, Homelite, Craftsman, McCulloch, MTD Pro, YardMachine, and Yard Man. The Toro units that we offer at The Home Depot are compatible with the Ryobi Expand-It accessories.Subsequently, question is, how do you start expanding Ryobi? How to Start a Ryobi Weed Eater Place the trimmer on a flat, bare surface such as a sidewalk or driveway. Press the ignition switch to the “On” position. Push the rubber primer bulb eight times. Slide the choke lever straight down so it is in the full choke position. Press and hold the throttle interlock button while squeezing the throttle trigger. Correspondingly, how does Ryobi expand it work? The Expand-It line has been around for several years and, while it’s probably obvious, the “Expand-It” name means that the system uses a base unit or motor (what RYOBI calls the “powerhead”) to power lots of different attachments.Are Ryobi attachments interchangeable?Ryobi is also made by MTD. The attachments are interchangeable. Almost all MTD & Husqvarna attachments are interchangeable with Craftsman.